I took one of my Ruger Blackhawk .45s and my Uberti Flat Top .45 to the range this morning and shot them in a side-by-side comparison, shooting them alternately. Could not bench rest so had to fire standing, but that is the way I usually shoot anyway. Here the results:

First group:

Then:

And lastly:

I was shooting on an indoor range, and the bottom two targets looked like I would possibly be hitting the floor, so I rotated my target. That's why the Uberti appears on the left on the last target.